As far as I understand what you want (and I'm not sure if I understand right) it's nothing to do with the new toolbar sets of DOpus11.
If you want to show additional Icons on the Drive toolbar you can add them in customize mode: How to add buttons from this forum to your toolbars. To enlarge the icons on the toolbar go to the Customize window=>Tab "Toolbar", select the "Drive" toolbar and set "Image Size" to large. You can also change the background color of the toolbar here.